movingWallVelocityFvPatchVectorField.C

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
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#include "movingWallVelocityFvPatchVectorField.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "fvcMeshPhi.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchVectorField(p, iF)
{}
 
 
Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchVectorField(p, iF, dict)
{}
 
 
Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const movingWallVelocityFvPatchVectorField& ptf,
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchVectorField(ptf, p, iF, mapper)
{}
 
 
Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const movingWallVelocityFvPatchVectorField& mwvpvf
)
:
    fixedValueFvPatchVectorField(mwvpvf)
{}
 
 
Foam::movingWallVelocityFvPatchVectorField::
movingWallVelocityFvPatchVectorField
(
    const movingWallVelocityFvPatchVectorField& mwvpvf,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchVectorField(mwvpvf, iF)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::vectorField>
Foam::movingWallVelocityFvPatchVectorField::Uwall() const
{
    const fvMesh& mesh = internalField().mesh();
    const fvPatch& p = patch();
    const polyPatch& pp = p.patch();
    const pointField& oldPoints = mesh.oldPoints();
 
    vectorField oldFc(pp.size());
 
    forAll(oldFc, i)
    {
        oldFc[i] = pp[i].centre(oldPoints);
    }
 
    const scalar deltaT = mesh.time().deltaTValue();
 
    const vectorField Up((pp.faceCentres() - oldFc)/deltaT);
 
    const volVectorField& U =
        static_cast<const volVectorField&>(internalField());
 
    scalarField phip
    (
        p.patchField<surfaceScalarField, scalar>(fvc::meshPhi(U))
    );
 
    const vectorField n(p.nf());
    const scalarField& magSf = p.magSf();
    tmp<scalarField> Un = phip/(magSf + VSMALL);
 
    return (Up + n*(Un - (n & Up)));
}
 
 
void Foam::movingWallVelocityFvPatchVectorField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    const fvMesh& mesh = internalField().mesh();
 
    if (mesh.moving())
    {
        const vectorField uwall(Uwall());
        vectorField::operator=(uwall);
    }
 
    fixedValueFvPatchVectorField::updateCoeffs();
}
 
 
void Foam::movingWallVelocityFvPatchVectorField::write(Ostream& os) const
{
    fvPatchVectorField::write(os);
    writeEntry("value", os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
    makePatchTypeField
    (
        fvPatchVectorField,
        movingWallVelocityFvPatchVectorField
    );
}
 
// ************************************************************************* //